Kazimierz Ajdukiewicz

Kazimierz Ajdukiewicz – b. 1890 in Tarnopol, d. 1963 in Warsaw. He was a distinguished representative of the Lvov-Warsaw School, a student of, among other teachers, Kazimierz Twardowski, Jan Łukasiewicz, Edmund Husserl, and David Hilbert. He lectured at Lvov University, Adam Mickiewcz University in Poznań (he was the rector of that university from 1948 to 1952), and University of Warsaw. His main areas of study were: logic, methodology of science, philosophy of language, and epistemology. His main works were: Język i poznanie, v. 1 (1960), v. 2 (Language and Cognition), Z metodologii nauk dedukcyjnych  (Some Thoughts on the Methodology of Deductive Sciences, 1921), Główne zasady logiki i metodologii nauk (The Main Principles of Logic and the Methodology of Science, 1928), Propedeutyka filozofii (Propedeutics of Philosophy, 1950), Zagadnienia i kierunki filozofii (Problems and Orientations of Philosophy, 1950), Zarys logiki (An Outline of Logic, 1953), Logika pragmatyczna (Pragmatic Logic, 1965).